CN114335671B - Pole piece compounding mechanism and lamination device - Google Patents

Abstract

The invention provides a pole piece compounding mechanism and a lamination device, wherein the mechanism comprises: a pole piece conveying assembly and a diaphragm conveying assembly; the pole piece conveying component and the diaphragm conveying component are tangentially arranged along a first direction; the pole piece conveying assembly is used for conveying the pole piece body and cutting the pole piece body to form pole piece units with pole lugs; the diaphragm conveying assembly is used for conveying the diaphragm body and cutting the diaphragm body to form a diaphragm unit; the pole piece unit and the diaphragm unit are arranged at the discharge end of the pole piece compounding mechanism and are compounded to form a compound pole piece. According to the pole piece compounding mechanism and the lamination device, automatic conveying and compounding of the pole pieces and the diaphragms are achieved by providing automatic equipment, the working efficiency is improved, and the problem of cutting one by one is avoided.

Description

Pole piece compounding mechanism and lamination device

Technical Field

The invention relates to the technical field of energy equipment, in particular to a pole piece compounding mechanism and a lamination device.

Background

The lamination schemes of the prior art have a stacking and Z-stacking scheme; stacking, namely compounding the positive plate, the diaphragm and the negative plate, laminating one by one after die cutting, and then pressing to form a battery cell; the Z stack is formed by Z-shaped lamination of a positive plate, a diaphragm and a negative plate.

When lamination is carried out, firstly, the machined positive plate and negative plate in the die cutting machine are alternately transferred to a positive lamination station and a negative lamination station through a mechanical arm, a diaphragm is arranged between the positive lamination station and the negative lamination station, an end head is pressed on a lamination workbench, the lamination workbench can move left and right between the positive lamination station and the negative lamination station to receive positive and negative plates, and the diaphragm separates the positive and negative plates in a Z shape in the process of receiving the positive and negative plates until lamination of the whole battery cell is completed.

Disclosure of Invention

The invention provides a pole piece compounding mechanism which is used for solving the defects that pole pieces are required to be cut one by one to form a required size in the prior art, and has complex working procedures and low production efficiency.

The invention also provides a lamination device, which is used for solving the defects that in the prior art, the lamination structure is generally complex, the lamination speed is low, and the production speed of the battery cell is limited.

According to a first aspect of the present invention, there is provided a pole piece compounding mechanism comprising: a pole piece conveying assembly and a diaphragm conveying assembly; the pole piece conveying component and the diaphragm conveying component are tangentially arranged along a first direction; the pole piece conveying assembly is used for conveying the pole piece body and cutting the pole piece body to form pole piece units with pole lugs; the diaphragm conveying assembly is used for conveying the diaphragm body and cutting the diaphragm body to form a diaphragm unit; the pole piece unit and the diaphragm unit are arranged at the discharge end of the pole piece compounding mechanism and are compounded to form a compound pole piece.

The pole piece conveying assembly and the diaphragm conveying assembly are arranged, so that the pole piece body and the diaphragm body are conveyed respectively, and are combined at the discharge end of the pole piece combining mechanism, so that a first combined pole piece and a second combined pole piece are formed, and are directly combined after being fed, no redundant conveying step exists in the middle, and the cutting and combining efficiency is improved; meanwhile, all the working procedures are completed in one working station, the working stations are not needed to be segmented, all the working procedures are integrated together, and the production efficiency is high.

According to one embodiment of the invention, the pole piece transport assembly comprises: a pole piece feeding roller, a pole piece waste traction roller and a pole piece first pressing roller; the pole piece feeding roller and the pole piece waste traction roller jointly form a mechanism for conveying the pole piece body; the first pole piece pressing roller is tangentially arranged with the pole piece feeding roller and is used for cutting the pole piece unit on the pole piece body; the cut pole piece units are attached to the surface of the first pole piece laminating roller and are conveyed to the discharge end of the pole piece compounding mechanism to be compounded with the diaphragm units.

Specifically, this embodiment provides an embodiment of pole piece conveying assembly, and pole piece pan feeding roller and pole piece waste material traction roller form the mechanism of carrying the pole piece body, and the pole piece body is cut when carrying to pole piece first pressfitting roller department, and the pole piece body forms the pole piece unit.

Further, the cut pole piece units are adsorbed on the surface of the first pole piece laminating roller and are conveyed to the discharge end of the compounding mechanism for compounding with the diaphragm units.

According to one embodiment of the invention, the first pole piece pressing roller is a vacuum adsorption roller.

Specifically, the embodiment provides an implementation manner of a first pole piece laminating roller, and the first pole piece laminating roller is set to be a vacuum adsorption roller, so that a cut pole piece unit can be better adsorbed on the surface of the first pole piece laminating roller.

According to one embodiment of the invention, the diaphragm delivery assembly comprises: a diaphragm feeding roller, a diaphragm waste drawing roller and a diaphragm first pressing roller; the diaphragm feeding roller and the diaphragm waste traction roller jointly form a mechanism for conveying the diaphragm body; the first pressing roller of the diaphragm is tangentially arranged with the diaphragm feeding roller and is used for cutting the diaphragm unit on the diaphragm body; the cut diaphragm units are attached to the surface of the first diaphragm pressing roller and are conveyed to the discharge end of the pole piece compounding mechanism to be compounded with the pole piece units.

Specifically, this example provides an embodiment of a diaphragm conveying assembly, in which a diaphragm feed roller and a diaphragm waste pull roller form a mechanism for conveying a diaphragm body, and the diaphragm body is cut to form a diaphragm unit when the diaphragm body is conveyed to a first pressing roller of the diaphragm.

Further, the cut diaphragm units are adsorbed on the surface of the first pressing roller of the diaphragm and are conveyed to the discharge end of the compounding mechanism for compounding with the pole piece units.

According to one embodiment of the invention, the first pressing roller of the diaphragm is a vacuum adsorption roller.

Specifically, the embodiment provides an implementation manner of a first pressing roller of a diaphragm, and the first pressing roller of the diaphragm is set to be a vacuum adsorption roller, so that a cut diaphragm unit can be better adsorbed on the surface of the first pressing roller of the diaphragm.

According to one embodiment of the invention, the diaphragm delivery assembly further comprises: a diaphragm heating section; the diaphragm heating part is connected with the diaphragm first pressing roller and is used for heating the diaphragm first pressing roller; the diaphragm unit forms a first adhesive layer after the surface of the diaphragm first pressing roller is heated; the diaphragm unit and the pole piece unit are arranged at the discharge end of the pole piece compounding mechanism through the first adhesive layer, so that hot-pressing compounding is realized.

Specifically, this embodiment provides an implementation of diaphragm heating portion, through setting up diaphragm heating portion for the diaphragm first pressfitting roller is heated the temperature and is risen, and then gives the diaphragm unit on diaphragm first pressfitting roller surface with the heat transfer, and the diaphragm unit forms the adhesive layer after being heated, realizes the complex of diaphragm unit and pole piece unit through first adhesive layer, has guaranteed the cohesiveness of diaphragm unit and pole piece unit in the pressfitting in-process.

According to one embodiment of the invention, the diaphragm delivery assembly further comprises: a diaphragm glue brushing part; the diaphragm glue brushing part is arranged on a path connecting the diaphragm feeding roller and the diaphragm waste traction roller and is used for smearing a second adhesive layer on the diaphragm body; the diaphragm unit and the pole piece unit are arranged at the discharge end of the pole piece compounding mechanism through the second adhesive layer, and compounding is achieved through extrusion.

Specifically, this embodiment provides an implementation of diaphragm brush portion, through setting up diaphragm brush portion, has realized gluing the diaphragm body through diaphragm pan feeding roller and diaphragm waste material traction roller, forms the second adhesive layer, realizes the complex of diaphragm unit and pole piece unit through the second adhesive layer, has guaranteed the cohesiveness of diaphragm unit and pole piece unit in the pressfitting in-process.

According to one embodiment of the invention, the diaphragm unit and the pole piece unit are pressed by the first pole piece pressing roller and the first diaphragm pressing roller to realize cold pressing compounding.

Specifically, the embodiment provides an implementation mode that the diaphragm unit and the pole piece unit are compounded through cold pressing, and the compounding of the pole piece unit and the diaphragm unit is realized through the mode that the first pressing roller of the pole piece and the first pressing roller of the diaphragm are cold pressed.

According to one embodiment of the invention, a first die cutter is arranged on the surface of the pole piece feeding roller; the first die cutter includes: a pole piece die cutting area and a pole lug die cutting area; the pole piece die-cutting area and the pole lug die-cutting area are groove-shaped cutter bodies connected with each other; wherein the pole piece die cutting area corresponds to the shape of the pole piece unit; the tab die-cut area corresponds to the shape of the tab.

Specifically, this embodiment provides an embodiment of setting up first die cutter on pole piece pan feeding roller, through the pole piece pan feeding roller on setting up including pole piece cross cutting district and the first die cutter in utmost point ear cross cutting district, has realized the cutting to the pole piece body, has guaranteed that pole piece unit can be smoothly with the separation of pole piece body.

According to one embodiment of the invention, the surface of the diaphragm feeding roller is provided with a second die cutter; the contour area of the second die cutter is larger than the area of the pole piece unit; the pole lugs of the pole piece units after compounding are at least partially positioned outside the diaphragm units.

Specifically, this embodiment provides an embodiment of setting up the second die cutter on the diaphragm pan feeding roller, through setting up the second die cutter on the diaphragm pan feeding roller, has realized the cutting to the diaphragm body, has guaranteed that the diaphragm unit can be smoothly with the separation of diaphragm body.

According to one embodiment of the invention, the pole piece transport assembly further comprises: a second press-fit roller for pole pieces; the second pole piece pressing roller is tangential to the first pole piece pressing roller; a first die cutter is arranged on the surface of the first pole piece laminating roller; the first die cutter includes: a pole piece die cutting area and a pole lug die cutting area; the pole piece die-cutting area and the pole lug die-cutting area are groove-shaped cutter bodies connected with each other; wherein the pole piece die cutting area corresponds to the shape of the pole piece unit; the electrode lug die-cut area corresponds to the shape of the electrode lug; and in the rotating process of the pole piece second pressing roller and the pole piece first pressing roller, the pole piece unit is transferred from the pole piece first pressing roller to the pole piece second pressing roller.

Specifically, this embodiment provides an embodiment of setting up first die cutter on the first pressfitting roller of pole piece, through the first die cutter that sets up including pole piece cross cutting district and utmost point ear cross cutting district on the first pressfitting roller of pole piece, has realized the cutting to the pole piece body, has guaranteed that pole piece unit can be smoothly with the separation of pole piece body, and pole piece second pressfitting roller adsorbs the pole piece unit after the cutting from the first pressfitting roller of pole piece simultaneously and carries to the discharge end of pole piece compounding mechanism, and then realizes the compounding of compound pole piece.

According to one embodiment of the invention, the second pole piece pressing roller is a vacuum adsorption roller.

Specifically, the embodiment provides an implementation mode of the second pole piece laminating roller, and the second pole piece laminating roller is set to be a vacuum adsorption roller, so that the transfer of the pole piece units from the first pole piece laminating roller to the second pole piece laminating roller is ensured.

According to one embodiment of the invention, the diaphragm delivery assembly further comprises: a second pressing roller for the diaphragm; the second pressing roller of the diaphragm is tangential to the first pressing roller of the diaphragm and the second pressing roller of the pole piece respectively; the surface of the first pressing roller of the diaphragm is provided with a second die cutter; the contour area of the second die cutter is larger than the area of the pole piece unit; the pole lugs of the pole piece units after compounding are at least partially positioned outside the diaphragm units; and in the rotation process of the diaphragm second pressing roller and the diaphragm first pressing roller, the diaphragm unit is transferred from the diaphragm first pressing roller to the diaphragm second pressing roller and is compounded with the pole piece unit on the pole piece second pressing roller at the discharge end of the pole piece compounding mechanism to form a compound pole piece.

Specifically, this embodiment provides an embodiment of setting up the second die cutter on the second pressfitting roller of diaphragm, through setting up the second die cutter on the second pressfitting roller of diaphragm, has realized the cutting to the diaphragm body, has guaranteed that the diaphragm unit can be smooth with the separation of diaphragm body, and the diaphragm unit after the diaphragm second pressfitting roller adsorbs the cutting from the second pressfitting roller of diaphragm simultaneously to carry to the discharge end of pole piece compounding mechanism, and then realize the compounding of compound pole piece.

According to one embodiment of the invention, the second pressing roller of the diaphragm is a vacuum adsorption roller.

Specifically, the present embodiment provides an embodiment of the second pressing roller for the diaphragm, and by setting the second pressing roller for the diaphragm to be a vacuum adsorption roller, the transfer of the diaphragm unit from the first pressing roller for the diaphragm to the second pressing roller for the diaphragm is ensured.

According to a second aspect of the present invention, there is provided a lamination device having a pole piece compounding mechanism as described above.

According to one embodiment of the present invention, further comprising: lamination box; the two pole piece compounding mechanisms are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction; the lamination box is arranged between the two pole piece compounding mechanisms; the two pole piece compounding mechanisms respectively convey a first compound pole piece and a second compound pole piece to the lamination box; the first composite pole pieces and the second composite pole pieces alternately fall into the lamination box, and the lugs of the first composite pole pieces and the lugs of the second composite pole pieces are arranged in the lamination box in a staggered mode.

Specifically, this embodiment provides an embodiment of lamination case, through setting up the lamination case between two pole piece compounding mechanisms, has realized the collection to first compound pole piece after compounding and the compound pole piece of second, and first compound pole piece and the crisscross stack of second in the lamination case and place, has saved unnecessary transportation step and cutting step, and all processes are accomplished at a station, and the station need not to be segmented, has improved production efficiency.

It should be noted that, the arrangement of the tabs of the first composite pole piece and the tabs of the second composite pole piece in a staggered manner means that the tabs of the first composite pole piece and the tabs of the second composite pole piece in the lamination box are placed in a staggered manner in the first direction, and the tabs of the first composite pole piece are mutually overlapped in the first direction, and the tabs of the second composite pole piece are also mutually overlapped in the first direction.

According to one embodiment of the present invention, further comprising: a first conveyor belt; one end of the first conveying belt is arranged at the discharge end of the pole piece compounding mechanism, and the other end of the first conveying belt is arranged at the feeding end of the lamination box; the first conveying belt is arranged from the discharge end of the pole piece compounding mechanism and is inclined towards one side of the feeding end of the lamination box.

Specifically, this embodiment provides an embodiment of first conveyer belt, and the setting of first conveyer belt for first compound pole piece and the compound pole piece of second can obtain one end buffer distance, can fall into the lamination incasement more accurately.

It should be noted that, for the sake of economy, the first conveyor belt further includes a corresponding power motor and a corresponding belt support, which is not described in any greater detail herein, and in practical application, reference is made to the relevant conveyor apparatus.

According to one embodiment of the present invention, further comprising: a second conveyor belt, the second conveyor belt comprising: a horizontal conveying section and an inclined conveying section; one end of the horizontal conveying section is arranged at the discharge end of the pole piece compounding mechanism, and the other end of the horizontal conveying section is in butt joint with the inclined conveying section; the other end of the inclined conveying section, which is opposite to the horizontal conveying section, is arranged at the feeding end of the lamination box; the inclined conveying section is obliquely arranged from the butt joint of the inclined conveying section and the horizontal conveying section towards one side of the feeding end of the lamination box.

Specifically, this embodiment provides an embodiment of second conveyer belt, through setting up the second conveyer belt including horizontal conveying section and slope conveying section for first compound pole piece and second compound pole piece can obtain one end buffer distance, can more accurate fall into the lamination incasement.

Further, the horizontal conveying section is arranged to be horizontal, so that the setting distance between the pole piece compounding mechanisms can be more flexible, more space can be provided for improving the compounding mechanisms, more operation space is provided, and the expansibility of the whole device is improved.

It should be noted that, the horizontal conveying section and the inclined conveying section further include corresponding power motors and corresponding belt brackets, and for the sake of economy, the present invention will not be described in detail, but in practical application, reference should be made to related conveying apparatuses.

According to one embodiment of the present invention, further comprising: and the vibration part is arranged at the bottom of the lamination box and is used for realizing the stacking of the first composite pole piece and the second composite pole piece through vibration in the process that the first composite pole piece and the second composite pole piece fall into the lamination box.

Specifically, this embodiment provides an implementation of vibrating portion for first compound pole piece and the compound pole piece of second that falls into the lamination incasement can obtain horizontal vibration through setting up the vibrating portion, realizes the fine setting of position, and then guarantees that first compound pole piece and the compound pole piece of second pile up neatly in the lamination incasement.

According to one embodiment of the invention, the discharging directions of the two pole piece compounding mechanisms extend towards one side of the lamination box, and the discharging directions of the two pole piece compounding mechanisms are arranged at an included angle.

Specifically, this embodiment provides an implementation of pole piece compounding mechanism, sets the ejection of compact direction of two pole piece compounding mechanisms as the contained angle, has guaranteed that the compound first compound pole piece of pole piece compounding mechanism after and the compound pole piece of second can accurately fall into the lamination case, and then realizes piling up.

The above technical solutions in the present invention have at least one of the following technical effects: according to the pole piece compounding mechanism and the lamination device, automatic conveying and compounding of the pole pieces and the diaphragms are achieved by providing automatic equipment, the working efficiency is improved, and the problem of cutting one by one is avoided.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of an assembly relationship of a pole piece compounding mechanism provided by the present invention;

FIG. 2 is a second schematic diagram of the assembly relationship of the pole piece compounding mechanism provided by the invention;

FIG. 3 is a schematic illustration of the arrangement of pole piece transport assemblies in the pole piece compounding mechanism provided by the present invention;

FIG. 4 is a schematic illustration of the layout of the diaphragm conveying assembly in the pole piece compounding mechanism provided by the present invention;

FIG. 5 is a second schematic illustration of the relationship between the placement of the diaphragm transport assembly in the pole piece compounding mechanism provided by the present invention;

FIG. 6 is a third schematic illustration of the layout of the diaphragm transport assembly in the pole piece compounding mechanism provided by the present invention;

FIG. 7 is a schematic diagram of the layout of the diaphragm conveying assembly in the pole piece compounding mechanism provided by the invention;

FIG. 8 is a schematic illustration of the assembly relationship of a first die cutter and a second die cutter in the pole piece compounding mechanism provided by the present invention;

FIG. 9 is a second schematic view of the assembly relationship between the first and second die cutters in the pole piece compounding mechanism provided by the present invention;

FIG. 10 is a schematic illustration of one of the layout relationships of the lamination device provided by the present invention;

FIG. 11 is a second schematic illustration of the layout of the lamination device provided by the present invention;

FIG. 12 is a third schematic illustration of the layout of the lamination apparatus provided by the present invention;

FIG. 13 is a fourth schematic illustration of the layout of a lamination device provided by the present invention;

fig. 14 is a schematic diagram of an arrangement relationship of a first composite pole piece and a second composite pole piece after stacking in a lamination box in the lamination device provided by the invention.

Reference numerals:

10. A pole piece conveying assembly; 11. pole piece feeding rollers; 12. a pole piece waste material traction roller; 13. a pole piece first pressing roller; 14. a first die cutter; 141. a pole piece die cutting area; 142. a tab die cut area; 15. a second press-fit roller for pole pieces; 16. a negative pressure fan of the pole piece; 20. a diaphragm delivery assembly; 21. a diaphragm feeding roller; 22. a diaphragm waste pull roll; 23. a first pressing roller for separating the membrane; 24. a diaphragm heating section; 25. a diaphragm glue brushing part; 26. a second die cutter; 27. a second pressing roller for the diaphragm; 28. a diaphragm negative pressure fan; 30. lamination box; 40. a first composite pole piece; 50. a second composite pole piece; 60. a first conveyor belt; 70. a second conveyor belt; 71. a horizontal conveying section; 72. an inclined conveying section; 80. and a vibration part.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In some embodiments of the present invention, as shown in fig. 1 to 9, the present solution provides a pole piece compounding mechanism, including: a pole piece delivery assembly 10 and a diaphragm delivery assembly 20; the pole piece conveying component 10 and the diaphragm conveying component 20 are tangentially arranged along a first direction; the pole piece conveying assembly 10 is used for conveying the pole piece body and cutting the pole piece body to form pole piece units with pole lugs; the diaphragm conveying assembly 20 is used for conveying the diaphragm body and cutting the diaphragm body to form diaphragm units; wherein, pole piece unit and diaphragm unit are at the discharge end of pole piece compounding mechanism, compound pole piece that forms.

In detail, the invention provides a pole piece compounding mechanism, which is used for solving the defects that pole pieces are required to be cut one by one to form a required size in the prior art, and has complex procedures and low production efficiency.

It should be noted that, by arranging the pole piece conveying component 10 and the diaphragm conveying component 20, the pole piece body and the diaphragm body are respectively conveyed and are combined at the discharge end of the pole piece combining mechanism, so as to form a first composite pole piece 40 and a second composite pole piece 50, and after feeding, the first composite pole piece and the second composite pole piece are directly combined, no redundant conveying step exists in the middle, and the cutting and combining efficiency is improved; meanwhile, all the working procedures are completed in one working station, the working stations are not needed to be segmented, all the working procedures are integrated together, and the production efficiency is high.

In some possible embodiments of the present invention, the pole piece transport assembly 10 comprises: a pole piece feeding roller 11, a pole piece waste material traction roller 12 and a pole piece first pressing roller 13; the pole piece feeding roller 11 and the pole piece waste traction roller 12 jointly form a mechanism for conveying the pole piece body; the pole piece first pressing roller 13 is tangentially arranged with the pole piece feeding roller 11 and is used for cutting out pole piece units on the pole piece body; the cut pole piece unit is attached to the surface of the first pole piece laminating roller 13 and is conveyed to the discharge end of the pole piece compounding mechanism to be compounded with the diaphragm unit.

Specifically, this embodiment provides an embodiment of the pole piece conveying assembly 10, where the pole piece feeding roller 11 and the pole piece scrap pulling roller 12 form a mechanism for conveying the pole piece body, and the pole piece body is cut to form pole piece units when the pole piece body is conveyed to the first pole piece pressing roller 13.

Further, the cut pole piece units are adsorbed on the surface of the first pole piece laminating roller 13 and are conveyed to the discharge end of the compounding mechanism for compounding with the diaphragm units.

In some possible embodiments of the present invention, the first lamination roller 13 for pole piece is a vacuum suction roller.

Specifically, the embodiment provides an implementation manner of the first pole piece laminating roller 13, and the first pole piece laminating roller 13 is set to be a vacuum adsorption roller, so that the cut pole piece units can be better adsorbed on the surface of the first pole piece laminating roller 13.

In a possible embodiment, the pole piece transport assembly 10 further comprises: a negative-pressure fan 16 for pole pieces; the pole piece negative pressure fan 16 is connected with the pole piece first pressing roller 13; a plurality of first adsorption holes are uniformly distributed on the surface of the first pole piece laminating roller 13; under the action of the pole piece negative pressure fan 16, negative pressure is formed inside the pole piece first pressing roller 13, the cut pole piece units are adsorbed on the surface of the pole piece first pressing roller 13 through the first adsorption holes, vacuum is formed inside the pole piece first pressing roller 13 through the arrangement of the pole piece negative pressure fan 16, the pole piece first pressing roller 13 forms adsorption force through the first adsorption holes on the surface, and then the cut pole piece units are adsorbed on the surface of the pole piece first pressing roller 13.

In a possible embodiment, the device further comprises corresponding pipelines connected with the pole piece negative pressure fan 16, one end of each pipeline is connected with the pole piece negative pressure fan 16, and the other end of each pipeline is connected with the pole piece first pressing roller 13 and is used for vacuumizing the interior of the pole piece first pressing roller 13.

In a possible embodiment, the pole piece negative pressure fan 16 may also be arranged inside the pole piece first press roller 13.

In some possible embodiments of the present invention, the diaphragm delivery assembly 20 comprises: a diaphragm feeding roller 21, a diaphragm waste drawing roller 22 and a diaphragm first pressing roller 23; the diaphragm feeding roller 21 and the diaphragm waste drawing roller 22 together form a mechanism for conveying the diaphragm body; the first pressing roller 23 of the diaphragm is tangentially arranged with the diaphragm feeding roller 21 and is used for cutting out diaphragm units on the diaphragm body; the cut diaphragm unit is attached to the surface of the first diaphragm pressing roller 23, and is conveyed to the discharge end of the pole piece compounding mechanism to be compounded with the pole piece unit.

In particular, the present example provides an embodiment of a diaphragm conveying assembly 20, with a diaphragm feed roller 21 and a diaphragm waste pull roller 22 forming the mechanism for conveying the diaphragm body, which is cut to form the diaphragm unit when conveyed to the first diaphragm press roller 23.

Further, the cut diaphragm unit is adsorbed on the surface of the first pressing roller 23 of the diaphragm and is conveyed to the discharge end of the compounding mechanism for compounding with the pole piece unit.

In some possible embodiments of the invention, the first nip roller 23 is a vacuum suction roller.

Specifically, the embodiment provides an implementation manner of the first pressing roller 23 for the diaphragm, and the first pressing roller 23 for the diaphragm is set to be a vacuum adsorption roller, so that the cut diaphragm unit can be better adsorbed on the surface of the first pressing roller 23 for the diaphragm.

In a possible embodiment, the diaphragm delivery assembly 20 further comprises: a diaphragm negative pressure fan 28; the diaphragm negative pressure fan 28 is connected with the diaphragm first pressing roller 23; a plurality of second adsorption holes are uniformly distributed on the surface of the first pressing roller 23 of the diaphragm; under the action of the diaphragm negative pressure fan 28, negative pressure is formed inside the diaphragm first pressing roller 23, the cut diaphragm units are adsorbed on the surface of the diaphragm first pressing roller 23 through the second adsorption holes, vacuum is formed inside the diaphragm first pressing roller 23 through the arrangement of the diaphragm negative pressure fan 28, the diaphragm first pressing roller 23 forms adsorption force through the second adsorption holes on the surface, and then the cut diaphragm units are adsorbed on the surface of the diaphragm first pressing roller 23.

In a possible embodiment, the vacuum pump further comprises corresponding pipelines connected with the diaphragm negative pressure fan 28, one end of each pipeline is connected with the diaphragm negative pressure fan 28, and the other end of each pipeline is connected with the diaphragm first pressing roller 23 and is used for vacuumizing the interior of the diaphragm first pressing roller 23.

In a possible embodiment, a diaphragm negative pressure fan 28 may also be provided inside the diaphragm first press roller 23.

In some possible embodiments of the present invention, the diaphragm delivery assembly 20 further comprises: a diaphragm heating section 24; the diaphragm heating part 24 is connected with the diaphragm first pressing roller 23 and is used for heating the diaphragm first pressing roller 23; wherein, the diaphragm unit forms a first adhesive layer after the surface of the diaphragm first pressing roller 23 is heated; the diaphragm unit and the pole piece unit are arranged at the discharge end of the pole piece compounding mechanism through a first adhesive layer, so that hot-pressing compounding is realized.

Specifically, this embodiment provides an implementation manner of the diaphragm heating portion 24, through setting up the diaphragm heating portion 24, make the diaphragm first pressfitting roller 23 heated temperature rise, and then give the diaphragm unit on diaphragm first pressfitting roller 23 surface with the heat transfer, form the adhesive layer after the diaphragm unit is heated, realize the complex of diaphragm unit and pole piece unit through first adhesive layer, guaranteed the cohesiveness of diaphragm unit and pole piece unit in the pressfitting in-process.

In a possible embodiment, the first adhesive layer is a gel membrane formed on one or both sides of the membrane unit.

In a possible embodiment, the diaphragm heating portion 24 may be a heating device provided inside the diaphragm first pressing roller 23, and heat is transferred to the diaphragm first pressing roller 23 through a heat transfer unit.

In a possible embodiment, the diaphragm heating portion 24 may be a heating wire disposed on an inner surface of the diaphragm first pressing roller 23.

In some possible embodiments of the present invention, the diaphragm delivery assembly 20 further comprises: a diaphragm brush part 25; the diaphragm glue brushing part 25 is arranged on a path connecting the diaphragm feeding roller 21 and the diaphragm waste drawing roller 22 and is used for smearing a second adhesive layer on the diaphragm body; wherein, the diaphragm unit and the pole piece unit are arranged at the discharge end of the pole piece compounding mechanism through a second adhesive layer, and compounding is realized through extrusion.

Specifically, this embodiment provides an implementation of diaphragm rubberizing portion 25, through setting up diaphragm rubberizing portion 25, has realized gluing the diaphragm body through diaphragm pan feeding roller 21 and diaphragm waste material traction roller 22, forms the second adhesive layer, realizes the complex of diaphragm unit and pole piece unit through the second adhesive layer, has guaranteed the cohesiveness of diaphragm unit and pole piece unit in the pressfitting in-process.

In a possible embodiment, the diaphragm brushing portion 25 includes a glue brush, a glue barrel, a circulation mechanism, and the like, the circulation mechanism driving the glue brush to reciprocate between the glue barrel and a pre-brushing position provided on the path along which the diaphragm body is conveyed by the diaphragm feed roller 21 and the diaphragm waste take-up roller 22.

In a possible embodiment, the diaphragm glue brushing part 25 comprises a glue barrel and a nozzle, the nozzle is connected with the glue barrel through a pipeline, the spraying direction of the nozzle faces to a path of conveying the diaphragm body through the diaphragm feeding roller 21 and the diaphragm waste drawing roller 22, and glue solution is sprayed on the surface of the passing diaphragm body, so that a second adhesive layer is formed.

In a possible embodiment, the different pole piece conveying component 10 and the diaphragm conveying component 20 are arranged, the diaphragm glue brushing part 25 brushes glue towards one side of the outer surface of the diaphragm body, so that the pole piece unit and the diaphragm unit are ensured to be at the discharge end of the pole piece composite mechanism, and the second adhesive surface is positioned between the pole piece unit and the diaphragm unit.

In a possible embodiment, the different pole piece conveying component 10 and the diaphragm conveying component 20 are arranged, the diaphragm glue brushing part 25 brushes glue towards one side of the inner surface of the diaphragm body, so that the pole piece unit and the diaphragm unit are ensured to be at the discharge end of the pole piece compound mechanism, and the second adhesive surface is positioned between the pole piece unit and the diaphragm unit.

In some possible embodiments of the invention, the membrane unit and the pole piece unit are cold-pressed and compounded by extrusion of the pole piece first press roller 13 and the membrane first press roller 23.

Specifically, the present embodiment provides an embodiment in which the separator unit and the pole piece unit are combined by cold pressing, and the pole piece unit and the separator unit are combined by cold pressing the pole piece first pressing roller 13 and the separator first pressing roller 23.

In some possible embodiments of the invention, the surface of the pole piece feed roller 11 is provided with a first die cutter 14; the first die cutter 14 includes: pole piece die cut area 141 and tab die cut area 142; the pole piece die cutting area 141 and the pole lug die cutting area 142 are groove-shaped cutter bodies connected with each other; wherein the pole piece die cut area 141 corresponds to the shape of the pole piece unit; the tab die cut area 142 corresponds to the shape of the tab.

Specifically, this embodiment provides an embodiment of setting up the first die cutter 14 on the pole piece pan feeding roller 11, through the first die cutter 14 that sets up including pole piece cross cutting area 141 and utmost point ear cross cutting area 142 on the pole piece pan feeding roller 11, has realized the cutting to the pole piece body, has guaranteed that pole piece unit can be smoothly with the separation of pole piece body.

In a possible implementation manner, the pole piece cutter is a square groove provided on the circumferential surface of the pole piece feeding roller 11, the groove edge forms a cutting edge, the pole piece die-cut area 141 is square in shape, and the pole lug die-cut area 142 is connected with the pole piece die-cut area 141 and corresponds to the position of the pole lug on the pole piece unit.

In a possible implementation manner, the pole piece cutter is a circular groove provided on the circumferential surface of the pole piece feeding roller 11, the groove edge forms a cutting edge, the pole piece die-cut area 141 is circular in shape, and the pole lug die-cut area 142 is connected with the pole piece die-cut area 141 and corresponds to the position of the pole lug on the pole piece unit.

In some possible embodiments of the invention, the surface of the diaphragm feed roller 21 is provided with a second die cutter 26; the profile area of the second die cutter 26 is greater than the area of the pole piece unit; the pole lugs of the compounded pole piece units are at least partially positioned outside the diaphragm units.

Specifically, the embodiment provides an embodiment in which the second die-cutting knife 26 is disposed on the diaphragm feeding roller 21, and by disposing the second die-cutting knife 26 on the diaphragm feeding roller 21, the cutting of the diaphragm body is achieved, and the diaphragm unit is ensured to be smoothly separated from the diaphragm body.

In a possible embodiment, the second die-cutting knife 26 is a square groove provided on the circumferential surface of the separator feeding roller 21, and the area of the second die-cutting knife 26 covers the area of the pole piece die-cutting area 141, and the pole ear die-cutting area 142 is located outside the second die-cutting knife 26, so that the pole ears of the pole piece units can be located outside the separator units.

In a possible embodiment, the second die-cutting knife 26 is a circular groove provided on the circumferential surface of the separator feeding roller 21, and the area of the second die-cutting knife 26 covers the area of the pole piece die-cutting area 141, and the pole tab die-cutting area 142 is located outside the second die-cutting knife 26, so that the pole tab of the pole piece unit can be located outside the separator unit.

In some possible embodiments of the present invention, the pole piece transport assembly 10 further comprises: a second lamination roller 15 for pole pieces; the second pole piece laminating roller 15 is tangentially arranged with the first pole piece laminating roller 13; the surface of the pole piece first pressing roller 13 is provided with a first die cutter 14; the first die cutter 14 includes: pole piece die cut area 141 and tab die cut area 142; the pole piece die cutting area 141 and the pole lug die cutting area 142 are groove-shaped cutter bodies connected with each other; wherein the pole piece die cut area 141 corresponds to the shape of the pole piece unit; the tab die cut area 142 corresponds to the shape of the tab; in the process of rotating the pole piece second laminating roller 15 and the pole piece first laminating roller 13, the pole piece units are transferred from the pole piece first laminating roller 13 to the pole piece second laminating roller 15.

Specifically, this embodiment provides an embodiment that sets up first die cutter 14 on first pressfitting roller 13 of pole piece, through set up the first die cutter 14 that includes pole piece cross cutting district 141 and utmost point ear cross cutting district 142 on first pressfitting roller 13 of pole piece, has realized the cutting to the pole piece body, has guaranteed that pole piece unit can be separated with the pole piece body smoothly, and pole piece second pressfitting roller 15 is carried to the discharge end of pole piece compounding mechanism from the pole piece unit after the absorption cutting on the first pressfitting roller 13 of pole piece simultaneously, and then realizes the compounding of compound pole piece.

In a possible implementation manner, the pole piece cutter is a square groove provided on the circumferential surface of the first lamination roller 13, the groove edge forms a cutting edge, the pole piece die-cut area 141 is square, and the pole lug die-cut area 142 is connected with the pole piece die-cut area 141 and corresponds to the position of the pole lug on the pole piece unit.

In a possible implementation manner, the pole piece cutter is a circular groove arranged on the circumferential surface of the first pole piece laminating roller 13, the groove edge forms a cutting edge, the pole piece die-cutting area 141 is circular in shape, and the pole lug die-cutting area 142 is connected with the pole piece die-cutting area 141 and corresponds to the position of the pole lug on the pole piece unit.

In some possible embodiments of the present invention, the second lamination roller 15 is a vacuum suction roller.

Specifically, the present embodiment provides an embodiment of the second lamination roller 15 for pole piece, and by setting the second lamination roller 15 for pole piece as a vacuum suction roller, the transfer of the pole piece unit from the first lamination roller 13 for pole piece to the second lamination roller 15 for pole piece is ensured.

In a possible embodiment, the vacuum suction of the pole piece second lamination roller 15 is greater than the pole piece first lamination roller 13.

In a possible embodiment, the pole piece negative pressure fan 16 of the pole piece first laminating roller 13 stops working during the transfer of the pole piece unit from the pole piece first laminating roller 13 to the pole piece second laminating roller 15.

In some possible embodiments of the present invention, the diaphragm delivery assembly 20 further comprises: a second nip roller 27 for the separator; the second pressing roller 27 is respectively tangential to the first pressing roller 23 and the second pressing roller 15; the surface of the first pressing roller 23 of the diaphragm is provided with a second die cutter 26; the profile area of the second die cutter 26 is greater than the area of the pole piece unit; wherein, the pole lug of the pole piece unit after compounding is at least partially positioned outside the diaphragm unit; in the process of rotating the diaphragm second pressing roller 27 and the diaphragm first pressing roller 23, the diaphragm unit is transferred from the diaphragm first pressing roller 23 to the diaphragm second pressing roller 27 and is compounded with the pole piece unit on the pole piece second pressing roller 15 at the discharge end of the pole piece compounding mechanism to form a compound pole piece.

Specifically, this embodiment provides an embodiment of setting up second die cutter 26 on diaphragm second pressfitting roller 27, through setting up second die cutter 26 on diaphragm second pressfitting roller 27, has realized the cutting to the diaphragm body, has guaranteed that the diaphragm unit can be smooth with the diaphragm body separation, and diaphragm second pressfitting roller 27 adsorbs the diaphragm unit after the cutting from diaphragm second pressfitting roller 27 simultaneously to carry to the discharge end of pole piece compounding mechanism, and then realize the compounding of compound pole piece.

In a possible embodiment, the second die-cutting knife 26 is a square groove provided on the circumferential surface of the second pressing roller 27, and the area of the second die-cutting knife 26 covers the area of the pole piece die-cutting area 141, and the pole ear die-cutting area 142 is located outside the second die-cutting knife 26, so that the pole ears of the pole piece units can be located outside the diaphragm units.

In a possible embodiment, the second die-cutting blade 26 is a circular groove provided on the circumferential surface of the second lamination roller 27, and the area of the second die-cutting blade 26 covers the area of the pole piece die-cutting area 141, and the pole tab die-cutting area 142 is located outside the second die-cutting blade 26, so that the pole tab of the pole piece unit can be located outside the diaphragm unit.

In some possible embodiments of the invention, the second nip roller 27 is a vacuum suction roller.

In particular, the present embodiment provides an embodiment of the diaphragm second pressing roller 27, by providing the diaphragm second pressing roller 27 as a vacuum suction roller, the transfer of the diaphragm unit from the diaphragm first pressing roller 23 to the diaphragm second pressing roller 27 is ensured.

In a possible embodiment, the vacuum suction of the diaphragm second press roller 27 is greater than that of the diaphragm first press roller 23.

In a possible embodiment, the diaphragm negative pressure fan 28 of the diaphragm first press roller 23 is deactivated during the transfer of the diaphragm unit from the diaphragm first press roller 23 to the diaphragm second press roller 27.

In some embodiments of the present invention, as shown in fig. 1 to 14, the present solution provides a lamination device having a pole piece compounding mechanism as described above.

In detail, the invention also provides a lamination device, which is used for solving the defects that in the prior art, the lamination structure is generally complex, the lamination speed is low, and the production speed of the battery cell is limited.

In some possible embodiments of the present invention, further comprising: lamination box 30; the two pole piece compounding mechanisms are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction; lamination box 30 is disposed between the two pole piece compounding mechanisms; the two pole piece compounding mechanisms respectively convey the first compound pole piece 40 and the second compound pole piece 50 to the lamination box 30; the first composite pole piece 40 and the second composite pole piece 50 alternately fall into the lamination box 30, and the tabs of the first composite pole piece 40 and the tabs of the second composite pole piece 50 are staggered in the lamination box 30.

Specifically, this embodiment provides an implementation of lamination box 30, through setting up lamination box 30 between two pole piece compounding mechanisms, realized the collection to first compound pole piece 40 after compounding and second compound pole piece 50, and first compound pole piece 40 and second compound pole piece 50 are crisscross to pile up in lamination box 30 and place, have saved unnecessary transportation step and cutting step, and all processes are accomplished at a station, and the station need not to divide into sections, has improved production efficiency.

It should be noted that, the arrangement of the tabs of the first composite pole piece 40 and the tabs of the second composite pole piece 50 in a staggered manner means that the tabs of the first composite pole piece 40 and the tabs of the second composite pole piece 50 in the lamination box 30 are placed in a staggered manner in the first direction, the tabs of the first composite pole piece 40 are mutually overlapped in the first direction, and the tabs of the second composite pole piece 50 are also mutually overlapped in the first direction.

In a possible embodiment, the first composite pole piece 40 is a positive pole piece, the second composite pole piece 50 is a negative pole piece, and tabs are disposed on both the first composite pole piece 40 and the second composite pole piece 50.

In a possible embodiment, the first composite pole piece 40 is a negative pole piece, the second composite pole piece 50 is a positive pole piece, and tabs are disposed on both the first composite pole piece 40 and the second composite pole piece 50.

In some possible embodiments of the present invention, further comprising: a first conveyor belt 60; one end of the first conveying belt 60 is arranged at the discharge end of the pole piece compounding mechanism, and the other end of the first conveying belt 60 is arranged at the feed end of the lamination box 30; the first conveyor belt 60 is obliquely arranged from the discharge end of the pole piece compounding mechanism towards one side of the feeding end of the lamination box 30.

Specifically, the embodiment provides an embodiment of the first conveying belt 60, where the first conveying belt 60 is configured so that the first composite pole piece 40 and the second composite pole piece 50 can obtain a buffering distance at one end, and can fall into the lamination box 30 more accurately.

It should be noted that, the first conveyor belt 60 further includes a corresponding power motor and a corresponding belt bracket, which are not described in detail in the present invention for the sake of economy, and in practical application, reference should be made to a related conveying apparatus.

In some possible embodiments of the present invention, further comprising: a second conveyor belt 70, the second conveyor belt 70 comprising: a horizontal conveying section 71 and an inclined conveying section 72; one end of the horizontal conveying section 71 is arranged at the discharge end of the pole piece compounding mechanism, and the other end of the horizontal conveying section 71 is in butt joint with the inclined conveying section 72; the other end of the inclined conveying section 72 opposite to the horizontal conveying section 71 is arranged at the feeding end of the lamination box 30; wherein, the inclined conveying section 72 is obliquely arranged from the butt joint position with the horizontal conveying section 71 towards one side of the feeding end of the lamination box 30.

Specifically, the embodiment provides an embodiment of the second conveyor belt 70, by providing the second conveyor belt 70 including the horizontal conveying section 71 and the inclined conveying section 72, the first composite pole piece 40 and the second composite pole piece 50 can obtain one end buffer distance, and can fall into the lamination box 30 more accurately.

Further, the horizontal conveying section 71 is set to be horizontal, so that the setting distance between the pole piece compounding mechanisms can be more flexible, more space can be provided for improving the compounding mechanisms, more operation space is provided, and the expansibility of the whole device is improved.

It should be noted that, for the sake of economy, the horizontal conveying section 71 and the inclined conveying section 72 further include corresponding power motors and corresponding belt brackets, which are not described in detail in the present invention, and in practical application, reference should be made to the relevant conveying apparatuses.

In some possible embodiments of the present invention, further comprising: and a vibration part 80, wherein the vibration part 80 is arranged at the bottom of the lamination box 30, and is used for realizing the stacking of the first composite pole piece 40 and the second composite pole piece 50 through vibration in the process that the first composite pole piece 40 and the second composite pole piece 50 fall into the lamination box 30.

Specifically, the embodiment provides an implementation of the vibration part 80, by setting the vibration part 80, the first composite pole piece 40 and the second composite pole piece 50 falling into the lamination box 30 can obtain horizontal vibration, so as to realize fine adjustment of positions, and further ensure that the first composite pole piece 40 and the second composite pole piece 50 are stacked in the lamination box 30 in order.

In a possible embodiment, the vibration part 80 includes a vibration motor and a vibration seat, the vibration seat being connected to the bottom of the lamination box 30, the vibration motor being connected to the vibration seat.

In a possible embodiment, a tray is provided in the lamination box 30, and a door is provided at a side of the lamination box 30, the tray is used for accommodating the stacked first composite pole piece 40 and second composite pole piece 50, and the door is used for opening the lamination box 30 to take out the tray.

In some possible embodiments of the present invention, the discharging directions of the two pole piece compounding mechanisms extend toward one side of the lamination box 30, and the discharging directions of the two pole piece compounding mechanisms are disposed at an included angle.

Specifically, this embodiment provides an implementation of a pole piece compounding mechanism, sets the discharging direction of two pole piece compounding mechanisms as the contained angle, has guaranteed that first compound pole piece 40 and second compound pole piece 50 after pole piece compounding mechanism is compound can accurately fall into lamination box 30, and then realizes stacking.

In a possible embodiment, the central connection line of the pole piece feeding roller 11 and the pole piece waste drawing roller 12, and the central connection line of the pole piece waste drawing roller 12 and the pole piece first pressing roller 13 are formed with an inclined angle inclined towards one side of the lamination box 30, and the inclined arrangement is convenient for stacking the cut pole piece units into the lamination box 30.

In a possible embodiment, the center line of the diaphragm feeding roller 21 and the diaphragm waste drawing roller 22, and the center line of the diaphragm waste drawing roller 22 and the diaphragm first pressing roller 23 are formed with an inclination angle inclined toward one side of the lamination box 30, and the inclination arrangement facilitates stacking of the cut diaphragm units into the lamination box 30.

In a possible embodiment, to realize the alternate stacking of the first composite pole piece 40 and the second composite pole piece 50 in the lamination box 30, the pole piece compounding mechanism on one side of the first composite pole piece 40 may be operated first, and the pole piece compounding mechanism on one side of the second composite pole piece 50 may be operated after a delay of a preset time, so as to ensure the alternate stacking of the first composite pole piece 40 and the second composite pole piece 50 in the lamination box 30.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "manner," "particular modes," or "some modes," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or mode is included in at least one embodiment or mode of the embodiments of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or manner. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or ways. Furthermore, various embodiments or modes and features of various embodiments or modes described in this specification can be combined and combined by those skilled in the art without mutual conflict.

Finally, it should be noted that: the above embodiments are only for illustrating the present invention, and are not limiting of the present invention. While the invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and it is intended to be covered by the scope of the claims of the present invention.

Claims (16)

1. A lamination device, the device comprising a pole piece compounding mechanism, the pole piece compounding mechanism comprising: a pole piece conveying assembly (10) and a diaphragm conveying assembly (20);

The pole piece conveying assembly (10) and the diaphragm conveying assembly (20) are tangentially arranged along a first direction; the pole piece conveying assembly (10) is used for conveying the pole piece body and cutting the pole piece body to form a pole piece unit with a pole lug; the diaphragm conveying assembly (20) is used for conveying a diaphragm body and cutting the diaphragm body to form a diaphragm unit; wherein the pole piece unit and the diaphragm unit are arranged at the discharge end of the pole piece compounding mechanism and are compounded to form a compound pole piece;

The pole piece conveying assembly (10) comprises: a pole piece feeding roller (11), a pole piece waste material traction roller (12) and a pole piece first pressing roller (13); the pole piece feeding roller (11) and the pole piece waste traction roller (12) form a mechanism for conveying the pole piece body together; the first pole piece laminating roller (13) is tangentially arranged with the pole piece feeding roller (11) and is used for cutting the pole piece units on the pole piece body; the cut pole piece units are attached to the surface of the first pole piece laminating roller (13), and are conveyed to the discharge end of the pole piece compounding mechanism to be compounded with the diaphragm units; a first die cutter (14) is arranged on the surface of the pole piece feeding roller (11); a second die cutter (26) is arranged on the surface of the diaphragm feeding roller (21);

The diaphragm delivery assembly (20) includes: a diaphragm feeding roller (21), a diaphragm waste drawing roller (22) and a diaphragm first pressing roller (23); the diaphragm feeding roller (21) and the diaphragm waste drawing roller (22) form a mechanism for conveying the diaphragm body together; the first pressing roller (23) of the diaphragm is tangentially arranged with the diaphragm feeding roller (21) and is used for cutting the diaphragm unit on the diaphragm body; the cut diaphragm units are attached to the surface of the first diaphragm pressing roller (23), and are conveyed to the discharge end of the pole piece compounding mechanism to be compounded with the pole piece units;

The apparatus further comprises: a lamination box (30); the two pole piece compounding mechanisms are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction; the lamination box (30) is arranged between the two pole piece compounding mechanisms; the two pole piece compounding mechanisms respectively convey a first compound pole piece (40) and a second compound pole piece (50) to the lamination box (30); the first composite pole pieces (40) and the second composite pole pieces (50) alternately fall into the lamination box (30), and the lugs of the first composite pole pieces (40) and the lugs of the second composite pole pieces (50) are arranged in the lamination box (30) in a staggered mode.

2. A lamination device according to claim 1, characterized in that the first lamination roller (13) of the pole piece is a vacuum suction roller.

3. A lamination device according to claim 1, characterized in that the first lamination roller (23) of the membrane is a vacuum suction roller.

4. A lamination device according to claim 1, wherein the membrane delivery assembly (20) further comprises: a diaphragm heating unit (24);

The diaphragm heating part (24) is connected with the diaphragm first pressing roller (23) and is used for heating the diaphragm first pressing roller (23);

Wherein, the membrane unit forms a first adhesive layer after the surface of the first pressing roller (23) of the membrane is heated;

The diaphragm unit and the pole piece unit are arranged at the discharge end of the pole piece compounding mechanism through the first adhesive layer, so that hot-pressing compounding is realized.

5. A lamination device according to claim 1, wherein the membrane delivery assembly (20) further comprises: a diaphragm glue brushing part (25);

The diaphragm glue brushing part (25) is arranged on a connecting path of the diaphragm feeding roller (21) and the diaphragm waste traction roller (22) and is used for smearing a second adhesive layer on the diaphragm body;

The diaphragm unit and the pole piece unit are arranged at the discharge end of the pole piece compounding mechanism through the second adhesive layer, and compounding is achieved through extrusion.

6. A lamination device according to claim 1, characterized in that the membrane unit and the pole piece unit are cold-pressed in combination by extrusion of the pole piece first press roller (13) and the membrane first press roller (23).

7. A lamination device according to any one of claims 1 to 6, wherein the first die cutter (14) comprises: a pole piece die cutting area (141) and a pole lug die cutting area (142);

The pole piece die cutting area (141) and the pole lug die cutting area (142) are groove-shaped cutter bodies connected with each other;

Wherein the pole piece die-cut area (141) corresponds to the shape of the pole piece unit;

the tab die cut area (142) corresponds to the shape of the tab.

8. A lamination device according to any one of claims 1 to 6, characterized in that the profile area of the second die cutter (26) is greater than the area of the pole piece unit;

The pole lugs of the pole piece units after compounding are at least partially positioned outside the diaphragm units.

9. A lamination device according to any one of claims 1 to 5, wherein the pole piece transport assembly (10) further comprises: a second lamination roller (15) for pole pieces;

The second pole piece pressing roller (15) is tangentially arranged with the first pole piece pressing roller (13);

A first die cutter (14) is arranged on the surface of the pole piece first pressing roller (13);

The first die cutter (14) includes: a pole piece die cutting area (141) and a pole lug die cutting area (142);

The pole piece die cutting area (141) and the pole lug die cutting area (142) are groove-shaped cutter bodies connected with each other;

Wherein the pole piece die-cut area (141) corresponds to the shape of the pole piece unit;

the tab die cut area (142) corresponds to the shape of the tab;

And in the rotating process of the pole piece second lamination roller (15) and the pole piece first lamination roller (13), the pole piece unit is transferred from the pole piece first lamination roller (13) to the pole piece second lamination roller (15).

10. A lamination device according to claim 9, characterized in that the second lamination roller (15) is a vacuum suction roller.

11. A lamination device according to claim 9, wherein the membrane delivery assembly (20) further comprises: a second pressing roller (27) for the diaphragm;

The diaphragm second pressing roller (27) is respectively tangential to the diaphragm first pressing roller (23) and the pole piece second pressing roller (15);

The surface of the first pressing roller (23) of the diaphragm is provided with a second die cutter (26);

The contour area of the second die cutter (26) is larger than the area of the pole piece unit;

The pole lugs of the pole piece units after compounding are at least partially positioned outside the diaphragm units;

In the rotation process of the diaphragm second pressing roller (27) and the diaphragm first pressing roller (23), the diaphragm unit is transferred from the diaphragm first pressing roller (23) to the diaphragm second pressing roller (27), and is compounded with the pole piece unit on the pole piece second pressing roller (15) at the discharge end of the pole piece compounding mechanism to form a compound pole piece.

12. A lamination device according to claim 11, characterized in that the second lamination roller (27) is a vacuum suction roller.

13. A lamination device according to any one of claims 1 to 5, further comprising: a first conveyor belt (60);

One end of the first conveying belt (60) is arranged at the discharge end of the pole piece compounding mechanism, and the other end of the first conveying belt (60) is arranged at the feeding end of the lamination box (30);

the first conveying belt (60) is obliquely arranged from the discharge end of the pole piece compounding mechanism towards one side of the feeding end of the lamination box (30).

14. A lamination device according to any one of claims 1 to 5, further comprising: -a second conveyor belt (70), the second conveyor belt (70) comprising: a horizontal conveying section (71) and an inclined conveying section (72);

One end of the horizontal conveying section (71) is arranged at the discharge end of the pole piece compounding mechanism, and the other end of the horizontal conveying section (71) is in butt joint with the inclined conveying section (72);

The other end of the inclined conveying section (72) opposite to the horizontal conveying section (71) is arranged at the feeding end of the lamination box (30);

The inclined conveying section (72) is obliquely arranged from the butt joint position of the inclined conveying section (72) and the horizontal conveying section (71) towards one side of the feeding end of the lamination box (30).

15. A lamination device according to any one of claims 1 to 5, further comprising: the vibrating part (80), vibrating part (80) set up in the bottom of lamination case (30), be used for in first compound pole piece (40) with in-process that second compound pole piece (50) fall into in lamination case (30), realize through the vibration first compound pole piece (40) with the stacking of second compound pole piece (50).

16. A lamination device according to any one of claims 1 to 5, characterized in that the discharge directions of the two pole piece compounding mechanisms extend towards one side of the lamination box (30), and the discharge directions of the two pole piece compounding mechanisms are arranged at an angle.